Machine for performing nailing and like fastening operations



.1. HQZA April 23, 1940.

MACHINE FOR PERFORMING NAI LING AND LIKE FASTENING OPERATIONS Filed Oct. 29, 1938 F/G.Z.

Patented Apr. 23, 1940 UNITED STATES PATENT OFFICE momma Fon' PERFORMING NAIIJNG AND LIKE FASTENING OPERATIONS John Hoza, Zlin, Czechoslovakia Application October 29, 1938, Serial No. 237,788

In Czechoslovakia October 16, 1937 3 Claims,

The invention relates to improvements in machines for performing nailing and like fastening operations'and especially for performing nailing operations on the heels of footwear during the manufacture thereof.

With more particularity, the invention is concerned with means for mounting the orifice member, (from which the fastening elements are delivered) on its support and it is an object of the invention to permit the orifice member to be readily removed, and as readily mounted on its support, these operations being required fairly frequentlyo n breaking of one of the fastening elements in the delivery channel of the orificev member for example. If the removal and mounting of the orifice member on such an occasion is a lengthy procedure it entails a complete interruption of all the stages of production associated with the fastening operations.

A second object of the invention is to ensure that, despite the rapidity with which the orifice It is a third object of the invention to permit the orifice member to be mounted on its supportwithout the use of screws or the like.

An example of the invention is shown in the drawing, which shows:

Fig. l is an elevation of an orifice member mounted on the turret,\ and showing the delivery channels, hammers and th"e other mechanisms;

Fig. 2 is a detail view of part of the mounting; and Fig. 3 a cross section on the line A-A of Fig- 2.

Referring to the drawing:

An orifice member 2 for delivering thenails is suspended on the support i in such a way that the outlet orifices of the channels 3 in the member 2 lie exactly over corresponding openings 4 of the reaction member 5. This member 5 is connected to the support I in such a way that, during the operation of .the nailing machine, it is moved conjointly with the orifice member 2. In addition, hammers 6 are'provided on the support I, the number of hammers corresponding to the number of channels 3 in the orifice member. The front surface of the support I is steeply inclined so that the orifice member, which has a surface to engage the inclined surface of the support, has when mounted in position the inclination requisite for accurately driving in the fixing nails. On this inclined surface there is a recess 1 from opposite ends of 6 which keyways extend, in which keyways fit two keys 8 (Fig. 2).- Thesekeys 8 are oi. dovetail formation as shown in Fig. 3, and the keyways with which they are engaged are of corresponding construction so that'the member 2 is slidingly locked to the support I when the keys are engaged in the keyways. The keys are located on the orifice member 2 beyond and spaced from opposite ends of a projection ll which projects into the recess 1, but is however shorter by a given extent than the recess, so that the keys can move in the keyways, and be disengaged thereiromwhen the member 2 reaches its limit of movement in an upward direction. The end walls of the recess I provide stops for abutment 20 'ing position by the spring II. This mode of 80 suspension is simple and is dependable in that the orifice member is secured more firmly by the latch III in proportion as the orifice member is stressed by the impact so that the orifice member holds better thegreater is the pressure applied to it from underneath (from the heel).

The procedure on mounting and removing the Y orifice member lls very simple, easy, and-speedy..

- The operatormoves the latch in on the support I, pushes the. orifice m'ember upwardly until the projection I3 on the orifice member engages with its upper edge on the upper face of the pulled downwards until the hammers 6 slide out of the channels 3 in the orifice member, which is then free. The mounting of the orifice members is efiected by the same procedure but with the steps in reverse order.

The use of an orifice member mounted in this way is very simple and at the same time very economical, the orifice member having a longe life than those at present in use. i

2 -2,1oa,aos

I claim:

1. In a machine for performing nailing and like fastening operations and comprising an orifice member for delivering fastening elements and a support for the orifice member,-the orifice member and support having surfaces adapted to interengage face to face: means for mounting the orifice member on the support said means comprising a projection on the orifice member and a seat on the support to receive the projection; a pivoted latch on the support, the latch being adapted to engage the projection; resilient means urging the latch to its projection-engaging position; and a positioning connection between the orifice member and the support, the

connection being constituted by key and keyway elements.

2. A machine for performing nailing operations in the manufacture of footwear comprising an orifice member formed with delivery channels and outlet orifices for the channelsrham mers for ejecting nails from the orifices; a support for the orifice member having a steeply inclined surface, the orifice member having a sur face to engage face to face with the support surface; a projection on the orifice member; seat on the support to receive the projection an thereby hold the orifice member removably sus pended on the support; a pivoted latch on th support to engage the projection; resilient mean urging the latch to its projection-engaging po sition; a reaction member on the support forme with openings to register with the outlet orifice on the orifice member; a keyway on the support and a key on the orifice member complementar to and engaging the keyway and positioning th orifice member so that its outlet orifices are 11 exact registry with the openings in the reactio: member.

3. The machine claimed in claim 2, and com prising also an abutment on the orifice mem her and stops on the support defining limits 0 'up and down movement of \the engaging sur faces on the orifice member and support.

JOHN HOZA. 

